V-thread pattern induces least von Mises stress, contact pressure and displacement compared with other thread patterns like square, buttress and revers
buttress thread under vertical occlusal loading condition.
Threading macros--42 pages of them and variables for threading, in particular for
buttress threads. With their asymmetrical cross-section,
buttress threads are best to withstand the shock loads, vibration, and high stresses in rock crushers.
There's no worry about someone tearing out the page about
buttress threads for "reference." Also, searchability in the digital version is easier, compared to the original handbook's indented chapter marks and tables of contents.
In addition, the higher application torques of modified
buttress threads provides resistance to loosening and product leakage.
Fittings can be installed by one person, yet they are of extremely heavy design and include heavy-duty
buttress threads so that the fitting may be tightened sufficiently to help prevent leaks under pressure.
The CHD cylinder has
buttress threads for bores over 3.5 in., with a variety of seal packages available.